Ammolagena clavata ( Jones and Parker, 1860 )

Benedetti, A, 2017, Eocene / Oligocene deep-water agglutinated foraminifers (DWAF) assemblages from the Madonie Mountains (Sicily, Southern Italy), Palaeontologia Electronica 20 (1), pp. 1-66 : 21-24

Ammolagena clavata ( Jones and Parker, 1860)

Figure 14.1-2

1860 Trochammina irregularis (d'Orbigny) var. clavata ; Jones and Parker, p. 304.

1884 Webbina clavata Jones and Parker ; Brady, p. 349-350, pl. 41I, figs. 12-16 (cum syn.).

2004 Ammolagena clavata (Jones and Parker) ; Nigam, Mazumder, and Saraswat, p. 74, pl. 1, fig. a-d.

Material. 96 specimens from 20 samples.

Description. Test attached, large inflated and ovoid proloculus, followed by an undivided elongate irregular tube-like chamber, not increasing in size. Wall smooth, thin, finely agglutinated. Two apertures, one at the base of the proloculus as a simple opening surrounded by a lip, one at the end of the tube-like chamber.

Distribution. Cosmopolitan, known from the Cretaceous to Recent, recently signaled in the Indian Ocean ( Nigam et al., 2004).

Remarks. Attached form, sometimes encrusting Rhabdamminids, Ammodiscus or lituolids.

Figures

FIGURE 14. Scanning electron micrographs of Hormosinelloidea from the Caltavuturo Formation cropping out at Portella Colla. 1, Ammolagena clavata (Jones and Parker, 1860) on a specimen of Psammosiphonella cylindrica (Glaessner, 1937), PCs0. 2, Ammolagena clavata (Jones and Parker, 1860), PC060607. 3-7, Caudammina gutta Benedetti and Pignatti, 2009, PC18. 8, Subreophax cf. guttifer (Brady, 1881), PC15. 9, Subreophax cf. pseudoscalaris (Samuel, 1977), PCs0. 10, Subreophax scalaris (Grzybowski, 1896), PC11. 11-12, Subreophax splendidus (Grzybowski, 1898), PC060624 (11) and PC11 (12). 13, Arthrodendron subnodosiformis (Grzybowski, 1898), PC060615. 14, Arthrodendron grandis (Grzybowski, 1898), PC050515. 15-19, Kalamopsis grzybowskii (Dylążanka, 1923), PC18 (15), PC11 (16), PC18 (17), PC060621 (18) and PC060621 (19). Scale bar equals 0.5 mm.